Maratón Hernandarias-Paraná is a FINA Open Water Swimming Grand Prix held annually in Argentina on the river Paraná between the cities of Hernandarias and Paraná. It is the longest marathon swims in the world at 88 km.
10 February 2013
Confederacion Argentina de Deportes Acuaticos
Asociacion Barrancas Del Parana. Representatives inclue Andres Solioz (OC Chairman) and Alberto Sampayo (OC Secretary)